Preheat oven to 350 degrees F.

In a small bowl combine the flax seeds with the warm water and set aside.

In a large bowl mix together the oats, protein powder, sugar, and baking powder. Stir in the peanut butter, flax seed mixture, and vanilla extract.  The dough will be very thick and you might need to use your hands to get everything incorporated. Stir in the chocolate chips.

Roll the dough into 1 1/2 ball and place them on a parchment lined baking sheet.  Bake for 10-12 minutes or until the bottoms are lightly browned.  Allow the cookies to cool.  They will be very soft at first but will firm up as they cool off.